Hello!
I've been looking around for an analog companion to my Rigol DS1052E and managed to score this little guy from EBay.
![](https://i.imgur.com/1oQ4JhJ.jpg)
The seller said that he doesn't know the brand or anything else other than it's made in Korea.
The design and knobs look suspiciously like the (in)famous
Hung Chang OS-620, but this one has multiple triggering options and a different layout.
I don't have the scope on me yet, but I was wondering if somebody could help me identify this puppy based on pictures. If not, I'll crack it open when I get it to try and gather more info.
Here are some more pictures.
Thanks a bunch!
Got to wonder why a manufacturer wouldn't put their name on it!
![Face Palm :palm:](https://www.eevblog.com/forum/Smileys/default/facepalm.gif)
Any idea if it supposedly works?
Jay
Got to wonder why a manufacturer wouldn't put their name on it! ![Face Palm :palm:](https://www.eevblog.com/forum/Smileys/default/facepalm.gif)
Any idea if it supposedly works?
Judging by this picture, I am inclined to say that it does indeed work, which is why I bought it. It looks like it had a manufacturer plaque on top of the screen there but then something happened to it maybe?
Meguro MO-1252, Japanese not Korean
Also appears to have been sold by Elenco Electronics.
![](https://i.imgur.com/BP8BU1s.jpg)
The back of the scope says it's Korean. Judging by the colors it is indeed an Elenco MO-1252.
Thanks!
Ha funny, there's a repair thread on one of these at the moment:
https://www.eevblog.com/forum/repair/old-meguro-mo-1251-scope/
Heh, funny indeed. Hopefully mine arrives safely.
If you inspect that thread you'll find the OP listed the wrong model in the thread title, corrected the title and provided a link for the full manual for MO-1252.That may of use to you.
Judging by this picture, I am inclined to say that it does indeed work, which is why I bought it. It looks like it had a manufacturer plaque on top of the screen there but then something happened to it maybe?
I could be wrong, but it looks like in the picture channel B is set to its max vertical sensitivity (at least down in the mv range), hooked to the 5Vp-p cal signal, but showing less than a full div high. Also, unless its just the way the picture was taken, the horizontal seems to be off as well, or at least horribly out of focus (signal focus/intensity, not camera focus).
If you inspect that thread you'll find the OP listed the wrong model in the thread title, corrected the title and provided a link for the full manual for MO-1252.That may of use to you. ![Wink ;)](https://www.eevblog.com/forum/Smileys/default/wink.gif)
I actually found the manual on my own after I got the reply here, but I did inspect the thread, might be of use.
Got the scope for only $60 shipping included, so if it works all well then that was a deal.
Was outbid on a perfectly good Hitachi V-212 by a flimsy sniper-placed dollar at the same price.
![Cry :'(](https://www.eevblog.com/forum/Smileys/default/cry.gif)
I could be wrong, but it looks like in the picture channel B is set to its max vertical sensitivity (at least down in the mv range), hooked to the 5Vp-p cal signal, but showing less than a full div high. Also, unless its just the way the picture was taken, the horizontal seems to be off as well, or at least horribly out of focus (signal focus/intensity, not camera focus).
I'll report again when I actually get the scope and get to play around with it, hasn't been shipped yet and will probably take about a week after it does ship.
I attached a few more pictures with the trace on them though. What's the most likely thing that can go wrong with it?
Just an update, I apologize for the double-post.
Got the scope today, works pretty damn well. The calibration point is 0.5V p-p, the person who took the picture most likely had no idea what they were doing.
Thanks for all the help.
Glad to hear that it is working well. Hope I didn't cause you any extra worry. Enjoy your new tool!
The triggering is a little
The design and knobs look suspiciously like the (in)famous Hung Chang OS-620, but this one has multiple triggering options and a different layout.
They do look related.
What is really different between them is the delayed sweep feature. The OS-620 has a single timebase while your mystery oscilloscope has a single timebase delayed sweep which is pretty unusual; it is sort of midway between having a single timebase and having a dual timebase delayed sweep.
Glad to hear that it is working well. Hope I didn't cause you any extra worry.
Nah, I figure if it has a trace on it, then I could at least calibrate it and/or replace parts.
![Smiley :)](https://www.eevblog.com/forum/Smileys/default/smiley.gif)
Thanks.
They do look related.
I wonder if there are fifty million clones of this thing floating as well. The manual provides a full non-proprietary part list and even board templates for you to etch out.